Liquid Crystals,
Год журнала:
2024,
Номер
51(10), С. 1737 - 1748
Опубликована: Май 28, 2024
The
fabrication
of
liquid
crystalline
elastomer
(LCE)
with
reversible
deformation
is
promising
for
development
intelligent
materials
and
equipment.
Preparing
new
monomer
(LCM)
developing
novel
LCE
structures
are
crucial
the
advanced
LCE.
Herein,
we
design
synthesis
a
series
side-on
nematic
epoxy
LCM,
then
fabricate
corresponding
micropillar
array
via
photoinitiated
polymerisation
magnetic
induced
oriented
LCMs
soft
lithography
patterned
structures.
1H
NMR,
13C
COSY,
FTIR
MS
spectra
confirm
LCMs.
DSC
POM
results
demonstrate
that
crystals.
SEM,
OM,
observations
indicate
successful
micropillars
exhibit
contraction
extension
during
heating
cooling
cycles.
In
addition,
thermal
closely
related
to
structure
LCM.
By
using
same
method,
functional
multi-fold
gratings
prepared
by
master
mask
process,
providing
material
foundation
construction
surfaces
can
selectively
diffract
light
under
external
stimuli.
Abstract
With
the
increasing
application
of
electronic
devices,
absorption‐dominated
electromagnetic
interference
shielding
materials
(EMISM)
have
garnered
significant
attention
for
preventing
secondary
pollution.
In
this
study,
polyethyleneimine
(PEI)‐modified
MXene
(PEI@MXene)
is
fabricated
and
achieved
its
controlled
distribution
on
pore
walls
polyarylene
ether
nitrile
(PEN)
porous
films
via
phase
inversion
method
(PIM)
to
obtain
a
closed
skeleton
(CPS–MPW).
The
resulting
PEI@MXene/PEN
composite
film
(CFx)
exhibited
EMIS
efficiency
(EMISE).
Attributing
strong
interaction
between
PEI
hydrophilic
segment
amphiphilic
Pluronic
F127,
with
hydrophobic
anchored
by
PEN
matrix,
PEI@MXene
directionally
distributed
CFx.
addition,
from
cladding
isolating
it
honeycomb
pores,
obtained
CFx
are
insulators
without
forming
conductive
network.
As
result,
these
demonstrate
EMISE
highest
SE
T
41.2
dB
coefficient
A
higher
than
0.51.
Further
continuous
hot
pressing
results
in
thinner
denser
an
impressive
specific
up
750
cm
−1
.
successful
fabrication
CPS–MPW‐type
provides
reference
developing
preparing
novel
EMISM.
